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Division 2

In Division 2, the world of metrology rotates around the "electrical triangle" of volt, ohm and ampere - from high-frequency and energy measuring technology to quantum electronics.


Electrical quantities are ubiquitous in metrology. The Electricity Division is charged with the realization and dissemination of the electrical and magnetic units. To this end, the Electricity Division develops precision electromagnetic measurements, which are based on electrical quantum metrology and quantum standards nowadays. Nanotechnology is employed and advanced for the in-house fabrication of superconductor and semiconductor quantum standards. Fundamental studies of quantum effects in condensed matter lay the groundwork for the electrical metrology of the future.

The Electricity Division offers various calibration services (see Calibration and Measurement Capabilities) and advises governmental authorities, standardization organizations, and industry on electrical measurements. Knowledge transfer programs support innovation and economic growth.


The revised International System of Units, the SI, will rest on seven defining constants. To realize the SI units based on the defining constants, methods of quantum metrology will be used in many cases. Consequently, the Bureau International de Poids et Mesures (BIPM) organized a workshop on the applications of quantum-based technologies to metrology. The Electricity Division of PTB presented two...

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Mittels magnetischer Tunnelkontakte ist es möglich, quantitative Temperaturmessungen mit einer Zeitauflösung im Subnanosekunden-Bereich durchzuführen. Dabei wird der Tunnelkontakt aufgrund seines temperaturabhängigen Tunnelwiderstands als kalibriertes Thermometer verwendet. Das Prinzip wurde in der PTB für die zeitaufgelöste Messung von laserinduzierten Temperaturerhöhungen demonstriert und kann...

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